Consider the following statements:
1. Complete similarity between model and prototype envisages geometric and dynamic similarities only
2. Distorted models are necessary where geometric similarity is not possible due to practical reasons.
3. In testing of model of a ship, the surface tension forces are generally neglected.
4. The scale effect takes care of the effect of dissimilarity between model and prototype:
Which of these statements are correct?
a. 1 and 3 b. 1, 2 and 4
c. 2 and 3 d. 2 and 4